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Latest Optical vortex Stories

Twisted Light Beams Could Enhance Internet Bandwidth Capacity
2013-06-30 07:42:43

redOrbit Staff & Wire Reports - Your Universe Online New fiber optic technology that transmits data along light beams that twist like a corkscrew rather than along straight lines could lead to increases in Internet bandwidth capacity, according to new research appearing in the journal Science. According to BBC News Science and Technology Reporter Jason Palmer, more data can be encoded in differently twisted beams because of the shape of the light. The concept had previously been...

New Device Could Contribute To A Major Increase In The Rate Of Future Optical Communications
2013-01-08 20:58:34

Harvard School of Engineering and Applied Sciences At a time when communication networks are scrambling for ways to transmit more data over limited bandwidth, a type of twisted light wave is gaining new attention. Called an optical vortex or vortex beam, this complex beam resembles a corkscrew, with waves that rotate as they travel. Now, applied physicists at the Harvard School of Engineering and Applied Sciences (SEAS) have created a new device that enables a conventional optical...

Optical Vortex Beams Placed On Chip
2012-10-19 13:46:28

Lee Rannals for redOrbit.com — Your Universe Online Scientists have demonstrated integrated arrays of emitters of "optical vortex beams" onto a silicon chip for the first time. Light in these beams, as reported to the journal Science, does not propagate in straight rays, but instead travels in a spiral fashion in a hollow conical beam shape. The beams look like a vortex or cyclone, with its light rays "twisted" either left-handed or right-handed. The researchers wrote that...

2012-02-17 10:22:16

Researchers from the University of York are pioneering the development of electron microscopes which will allow scientists to examine a greater variety of materials in new revolutionary ways. The team, headed by Professor Jun Yuan and Professor Mohamed Babiker, from the University´s Department of Physics has created electron beams with orbital angular momentum — electron vortex beams — which will open the way to many novel applications including the more efficient...

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2011-02-14 10:20:00

The fabric of space-time around spinning black holes should impart a "twist" in the property of light called orbital angular momentum. This momentum which could be detected here on Earth, the researchers say, may provide the first unique signature of black holes, reports the journal Nature Physics. Light particles , or photons, carry two kinds of momentum but only one of them is familiar. "If we take the Earth as an example, it spins around its own axis in about 24 hours - that is its spin...

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2010-01-18 09:12:06

The remarkable feat of tying light in knots has been achieved by a team of physicists working at the universities of Bristol, Glasgow and Southampton, UK, reports a paper in Nature Physics this week The remarkable feat of tying light in knots has been achieved by a team of physicists working at the universities of Bristol, Glasgow and Southampton, UK, reports a paper in Nature Physics this week. Understanding how to control light in this way has important implications for laser technology...

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2006-02-28 18:58:21

Arizona -- "Some people say that I study darkness, not optics," jokes Grover Swartzlander. But it's a kind of darkness that will allow astronomers to see the light. Swartzlander, an associate professor in The University of Arizona College of Optical Sciences, is developing devices that block out dazzling starlight, allowing astronomers to study planets in nearby solar systems. The devices also may prove valuable to optical microscopy and be used to protect camera and imaging systems from...


Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.